Mounting for trolley-heads.



- -J. I. BENNETT. MOUNTING FOB TBOLLEY HEADS. 'Arrmculon'rnnn AUG. 6. 1900.

Patented Dec. 1,1908.

I flare 0 if 757 usual manner.

Mountings for Trolley-Heads, of which the UNITED s'ra'rns earns orrion JOSEPH .1. BENNETLT, or rirrsrnc-tn, nassa'enrsnrrs, ASSIGNUR or or n-nALr 'ro LOAN'DO B. ESTES, OF XORTH -lDAMS, MASSACHUSETTS.

MOUNTING FOB TROLLEY-HE ADS.

No. soa /a4.

Specification of, Letters Patent.

Patented sec. 1, .1908.

To ,ull whom it may concern I Be it-known that I, Josnrn J. BENNETT, a. l citigen of the United States of America, re 5 siding at Pittsfield, in the county of Berkshire and State of Massachusetts, have invented new and useful Improvements in following is a specification.

This invention relates to improvements in mountings for trolley-Wheels, and its particular object is to provide a structure that. will permit the trolley-wheel to readily adapt itself to any irregularities in the trolleywire, especially going around sharp cu ves or corners (as when the car passes around the corner from one street to another,") that are generally at right angles to each other; the mounting of the wheel being so arranged that the same freely follows the curvature of i the trolley-wire without producing undue friction or grinding between the flanges of the wheel and wire, thus lessening to a great extent the danger of breakage of either the wire (or its fastening means) or trolley-pole. In the drawings forming part of this application,--Figure 1 is a plan view of the trolley-wire from above and showing the wheel in various positions of adjustment in dottedlines. Fig. 2 is a side elevation of my improvement, and a portion of the upper end of the trolley-pole which carries the wheel mountings. -Fig. 3 is a sectional plan View on the line 3-3 of Fig. 2 looking in the direction ofthe arrow. I

Referring to the drawings in detail, ct designates a portion of the ordinary overhead trolley-wire that is engaged on the underside thereof by the trolley-wheel b that is adapted for rotation on the pin 0. This pin is mount ed in the upright ears (1 and secured against loss and rotation by means of the enlargements 6 thereon, and cotter-pins f, in the g designates a base-piece having a depending portionh and an arm i that is cast in one piece and mounted in the upper end. of the l trolley-pole 9', being secured there n by means of the pin k. The base-piece g is provided with two angular sector-shaped. reoessed portions m that are adapted. to re ceive correspondingly shaped lug portions n that are cast integral with the rotatable head The rotatable head 0, cars d, and lugs n are cast in one piece.

It will be noticed firoin the view shown in 3 that the length of the are of the lug' portions n is less-than the length of the arc of the recesses m of the base-piece in order to permit a sullicient amount of movement of the rotatable head-piece 0 on the basepieceg in going around any curve of the trolleyrwire that may occur in practice, or in other words to allow the trolley-wheel bwhich is carried by the ear-pieces (Z free rotative .lnovement relative to the base-p1ece-g.

The rotatable head-piece 0 is secured to the base-piece g by means of a threaded stud 1) that is passed through a hole 0 in the piece 0. This stud is cast with the base-piece g and afterwards threaded. It is provided-- with a shoulder g that extends slightly above .the piece 0 and against which the securing nut r is firmly secured in order to atford a slight play between the pieces 9 and o, and to prevent the drawing together of these two pieces in a solid manner. The nut 1' is retained against loss by means of the cotterpins 8.

Byv means of thiseonstruction it is easily seen that when. r car passes around a curve the trolley-wheel b is permitted to follow the irregularities of the trolley-wire a without undue friction or grinding of the flanges of the wheel on the wire, as readily understood, and avoid any danger of breaking either the wire or any of the mountings of the trolleywheel. Tl'ilS IHOVBITlelii) of the wheel is accomplished by the rotatable head-turning piece 0 on the stud 2), and the arch-shaped lugs '22 traveling in the larger arch-shapedrecesses m of the base-piece g. Enough space is left between the sides of the parts of the lugs n and the sides of the recesses m to permit the wheel b to pass around ainy curve of the wire that would be found. in practice.

The dotted linepositions of the trolleywheel indicated in Fig. 1 clearly illustrate the various positions that the wheel may as sume as it follows the curves of the trolleycessed portions m, a rotatable head 0, sectorshaped lug portions n integral therewith and the rotatable head 0 Whereb limited rotaengaging the angular-shaped recessed p01".- letive movement between the ase g and the tiens m of the base-piece, the length of the I head-piece 0 is effected.

ailTQlO fthe lugs being-less than the length (if JOSEPH J. BENNETT. 5v-jthe 'ar'c 0f the recessed portion of the hase- Witnesses-z iece, va, threaded studp integral with the t RICHARD A. WOOD.

asepiec'e g'nnd passed through a hole 0 in JULIUS B. GOUSSETT. 

